TRIACs

A TRIAC (triode for alternating current) is a silicone semiconductor component with three terminals or legs that allow current to flow in either direction when triggered. TRIACs are a development of a similar family member the thyristor. However, unlike the thyristor which is unidirectional the TRIAC is able to control current over both halves of the sine wave making TRIACs bidirectional.
How does it work?
In basic terms a TRIAC is a low power to medium power semi-latching solid state switch. The device acts like two standard thyristors inversely connected in parallel or back to back. To activate the component a voltage needs to be applied to the gate terminal. Once the gate current is triggered a TRIAC will continue to conduct even if the supply to the gate is removed.
A TRIAC is a 4 layer silicone component that is PNPN in the positive direction and NPNP in the negative direction. The devices come in panel mount, surface mount and through hole mounting options in various package types to suit a wide variety electronics applications and circuits.
Terminals
On the TRIAC symbol there are three terminals. These terminals are,
MT1 Anode 1 (Main Terminal 1)
MT2 Anode 2 (Main Terminal 2)
Gate Terminal
Applications
TRIACs are widely used for switching and power control of AC systems. TRIACS are particularly useful in applications such as lighting dimmers as they enable the utilisation of each half-cycle of the AC wave. The solid state device can be used in a circuit as a simple on off device in a wide range of electronic applications. Some of the more common areas are,
• Temperature control
• Liquid level control
• Dimmers for domestic lighting
• Small motor control
• Speed control for electric fans

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Description Price Rated Average On-State Current Mounting Type Package Type Maximum Gate Trigger Current Repetitive Peak Reverse Voltage Surge Current Rating Pin Count Maximum Gate Trigger Voltage Repetitive Peak Forward Blocking Voltage Maximum Holding Current Dimensions Length Width Height
RS庫存編號 168-8917
製造零件編號BTA06-600CWRG
HK$7.318
毎管:50 個
單位
6A Through Hole TO-220AB 35mA 600V 60A 3 1.3V 600V 35mA 10.4 x 4.6 x 15.9mm 10.4mm 4.6mm 15.9mm
RS庫存編號 714-2631
製造零件編號BTB24-800BWRG
HK$16.325
/個 (每包:2個)
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25A Through Hole TO-220AB 50mA 800V 260A 3 1.3V 800V 75mA 10.4 x 4.6 x 9.15mm 10.4mm 4.6mm 9.15mm
RS庫存編號 878-3908
製造零件編號Q4008R4
BrandLittelfuse
HK$7.32
/個 (每包:500個)
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8A Through Hole TO-220 25mA 400V 100A 3 1.3V - 50mA 10.67 x 4.78 x 15.75mm 10.67mm 4.78mm 15.75mm
RS庫存編號 793-1320
製造零件編號BTB24-800BRG
HK$15.666
/個 (每包:5個)
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25A Through Hole TO-220AB 100mA 800V 260A 3 1.3V 600V 80mA 10.4 x 4.6 x 15.9mm 10.4mm 4.6mm 15.9mm
RS庫存編號 102-4083
製造零件編號BTA16-800BRG
HK$9.898
毎管:50 個
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16A Through Hole TO-220AB 100mA 800V 168A 3 1.3V 800V 50mA 10.4 x 4.6 x 9.3mm 10.4mm 4.6mm 9.3mm
RS庫存編號 727-1111
製造零件編號BT134-600D,127
HK$3.233
/個 (每包:10個)
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4A Through Hole SIP 10mA 600V 27A 3 1.5V 600V 10mA 7.8 x 2.8 x 11.1mm 7.8mm 2.8mm 11.1mm
RS庫存編號 880-5279
製造零件編號BTA06-600CWRG
HK$7.747
/個 (每包:10個)
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6A Through Hole TO-220AB 35mA 600V 60A 3 1.3V 600V 35mA 10.4 x 4.6 x 15.9mm 10.4mm 4.6mm 15.9mm
RS庫存編號 168-8857
製造零件編號BTA26-600BWRG
HK$34.544
毎管:30 個
單位
25A Through Hole TOP3 50mA 600V 260A 3 1.3V 600V 75mA 15.5 x 4.6 x 21.1mm 15.5mm 4.6mm 21.1mm
RS庫存編號 829-0343
製造零件編號BTA08-600BWRG
HK$11.176
/個 (每包:5個)
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8A Through Hole TO-220AB 50mA 800V 84A 3 1.3V 600V 50mA 10.4 x 4.6 x 15.9mm 10.4mm 4.6mm 15.9mm
RS庫存編號 177-5184
製造零件編號MAC12HCMG
BrandLittelfuse
HK$9.361
毎管:50 個
單位
12A Through Hole TO-220AB 50mA 600V 100A 3 1.5V 800V 60mA 10.28 x 4.82 x 15.75mm 10.28mm 4.82mm 15.75mm
RS庫存編號 168-7133
製造零件編號BTB24-800BRG
HK$12.772
毎管:50 個
單位
25A Through Hole TO-220AB 100mA 800V 260A 3 1.3V 600V 80mA 10.4 x 4.6 x 15.9mm 10.4mm 4.6mm 15.9mm
RS庫存編號 166-1298
製造零件編號BT134-800
HK$2.817
毎管:50 個
單位
4A Through Hole SIP 70mA 800V 27A 3 1.5V 800V 15mA 7.8 x 2.8 x 11.1mm 7.8mm 2.8mm 11.1mm
RS庫存編號 145-9251
製造零件編號BTB24-600BRG
HK$13.171
毎管:50 個
單位
25A Through Hole TO-220AB 100mA 800V 260A 3 1.3V 600V 80mA 10.4 x 4.6 x 15.9mm 10.4mm 4.6mm 15.9mm
RS庫存編號 800-9715
製造零件編號BTA12-600BW3G
BrandLittelfuse
HK$17.572
/個 (每包:10個)
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12A Through Hole TO-220 50mA 600V 105A 3 1.7V 800V 50mA 10.28 x 4.82 x 15.75mm 10.28mm 4.82mm 15.75mm
RS庫存編號 177-5199
製造零件編號2N6073BG
BrandLittelfuse
HK$4.386
個 (以毎盒:500)
單位
4A Through Hole TO-225 20mA 400V 30A 3 2.5V 400V 30mA 7.74 x 2.66 x 11.04mm 7.74mm 2.66mm 11.04mm
RS庫存編號 727-1142
製造零件編號BT134-600E,127
HK$3.525
/個 (每包:10個)
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4A Through Hole SIP 25mA 600V 4A 3 1.5V 600V 15mA 7.8 x 2.8 x 11.1mm 7.8mm 2.8mm 11.1mm
RS庫存編號 177-7335
製造零件編號BTA212-600B,127
HK$15.96
單位
12A Through Hole TO-220AB 50mA 600V 105A 3 1.5V 600V 60mA 10.3 x 4.7 x 9.4mm 10.3mm 4.7mm 9.4mm
RS庫存編號 145-8699
製造零件編號BTB16-600BRG
HK$9.326
毎管:30 個
單位
16A Through Hole TO-220AB 100mA 600V 168A 3 1.3V 600V 50mA 10.4 x 4.6 x 15.9mm 10.4mm 4.6mm 15.9mm
RS庫存編號 486-0907
製造零件編號BTA16-600BWRG
HK$13.55
/個 (每包:5個)
單位
16A Through Hole TO-220AB 50mA 600V 168A 3 1.3V 600V 50mA 10.4 x 4.6 x 9.3mm 10.4mm 4.6mm 9.3mm
RS庫存編號 829-0481
製造零件編號BTB24-600BRG
HK$15.818
/個 (每包:5個)
單位
25A Through Hole TO-220AB 100mA 800V 260A 3 1.3V 600V 80mA 10.4 x 4.6 x 15.9mm 10.4mm 4.6mm 15.9mm